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The Apollo 4ALF3S54B is a dual check valve designed to prevent backflow in plumbing systems. This model features a lead-free construction, making it safe for potable water applications.
This dual check valve is essential for protecting against backflow, ensuring water safety.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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